This is a good mod- I especially like the sights as they are very easy to pick up. I've actually had one of these guns in my hand, when I worked for Cabela's and they certainly do look exactly like these, so nice work on that! I did notice a few things that could be improved though: I didn't notice any cases ejecting with either single or dual pistols. Also, when one the ground I don't recall ever seeing a weapon light on any of them.
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FN Five-seveN Pistols Tan